3D Printable, Ultra-stretchable, Self-healable, and Self-adhesive Dual Cross-linked Nanocomposite Ionogels as Ultra-Durable Strain Sensors for Motion Detection and Wearable Human-machine Interface
writer：Jianxin Zhang, Enjie Liu, Shuai Hao, Xuemeng Yang, Tianci Li, Cunguang Lou, Mingtao Run*, Hongzan So
keywords：stretchable，ionogel，Self-healable, Self-adhesive
source：期刊
specific source：Chemical Engineering Journal
Issue time：2021年
Stretchable and transparent ionic conductive gels are considered as promising wearable strain sensors for motion detection and human-machine interface. However, it is a challenge to develop efficient and convenient method to fabricate high-precision, self-healable, highly stretchable and temperature tolerant ionogels, particularly can work in extreme environments. Herein, a novel 3D printable nanocomposite chemical ionogel has been fabricated by one-step
photopolymerization, which POSS nanodots as multifunctional chemical crosslinking points and PAA hydrogen bonds as reversible physical crosslinking points. The special dual cross-linking structures endow it record-ultrahigh stretchability (≈7000%), high conductivity, self-healability, self-adhesiveness, and superior wide tolerant temperatures (-78-235 oC). The nanocomposite ionogels based strain sensors show widely sensing range (1%-1200%), excellent durability (10000 cycles), extreme low (-60 oC) and high (150 oC) working temperatures, and can be assembled as wearable sensors for detecting various human motions. More importantly, these ionogels can also be applied for the wearable human-machine interface which can recognize and distinguish the human gestures and can also control the mechanical hand, particularly can work normally from -60 to 150 oC. Therefore, our superior multifunctional ultra-stretchable nanocomposite ionogel design creates a new concept for development of 3D printing intelligent electronics and artificial intelligence, especially for applications in extreme environments.